This low relief mound, several meters across, may be underlain by methane hydrate. Fluid that was denser than seawater flowed out of holes in the surface of the mound. Red laser dots are separated by 10 centimeters (3.94 inches).
Mound
Image courtesy of NOAA Ocean Exploration, Windows to the Deep 2019. Download larger version (jpg, 913 KB).
This low relief mound, several meters across, may be underlain by methane hydrate. Fluid that was denser than seawater flowed out of holes in the surface of the mound. Red laser dots are separated by 10 centimeters (3.94 inches).
Learn more